Special Weather Statement issued March 30 at 3:22AM EDT by NWS

…Patchy dense fog overnight… Patchy dense fog is being observed or will be possible through around 6 am for the Mohawk Valley, southern Adirondacks, Lake George Saratoga Region, Taconics, southern Vermont, Helderbergs, Schoharie Valley, and Capital District. Motorists should prepare for changes in visibility and reduce speed when encountering fog.

Source: National Weather Service Alerts for Vermont